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fix duplicate creation of default peer (#437)

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This commit is contained in:
Christoph Haas 2025-05-15 17:59:00 +02:00
parent ab9995350f
commit 8816165260
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2 changed files with 34 additions and 5 deletions
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16
internal/app/wireguard/wireguard.go
View File

@ -3,6 +3,7 @@ package wireguard
import ( import (
"context" "context"
"log/slog" "log/slog"
"sync"
"time" "time"
"github.com/h44z/wg-portal/internal/app" "github.com/h44z/wg-portal/internal/app"
@ -76,6 +77,8 @@ type Manager struct {
db InterfaceAndPeerDatabaseRepo db InterfaceAndPeerDatabaseRepo
wg InterfaceController wg InterfaceController
quick WgQuickController quick WgQuickController
userLockMap *sync.Map
} }
func NewWireGuardManager( func NewWireGuardManager(
@ -91,6 +94,7 @@ func NewWireGuardManager(
wg: wg, wg: wg,
db: db, db: db,
quick: quick, quick: quick,
userLockMap: &sync.Map{},
} }
m.connectToMessageBus() m.connectToMessageBus()
@ -117,6 +121,12 @@ func (m Manager) handleUserCreationEvent(user domain.User) {
return return
} }
_, loaded := m.userLockMap.LoadOrStore(user.Identifier, "create")
if loaded {
return // another goroutine is already handling this user
}
defer m.userLockMap.Delete(user.Identifier)
slog.Debug("handling new user event", "user", user.Identifier) slog.Debug("handling new user event", "user", user.Identifier)
ctx := domain.SetUserInfo(context.Background(), domain.SystemAdminContextUserInfo()) ctx := domain.SetUserInfo(context.Background(), domain.SystemAdminContextUserInfo())
@ -132,6 +142,12 @@ func (m Manager) handleUserLoginEvent(userId domain.UserIdentifier) {
return return
} }
_, loaded := m.userLockMap.LoadOrStore(userId, "login")
if loaded {
return // another goroutine is already handling this user
}
defer m.userLockMap.Delete(userId)
userPeers, err := m.db.GetUserPeers(context.Background(), userId) userPeers, err := m.db.GetUserPeers(context.Background(), userId)
if err != nil { if err != nil {
slog.Error("failed to retrieve existing peers prior to default peer creation", slog.Error("failed to retrieve existing peers prior to default peer creation",

13
internal/app/wireguard/wireguard_peers.go
View File

@ -5,6 +5,7 @@ import (
"errors" "errors"
"fmt" "fmt"
"log/slog" "log/slog"
"slices"
"time" "time"
"github.com/h44z/wg-portal/internal/app" "github.com/h44z/wg-portal/internal/app"
@ -23,12 +24,24 @@ func (m Manager) CreateDefaultPeer(ctx context.Context, userId domain.UserIdenti
return fmt.Errorf("failed to fetch all interfaces: %w", err) return fmt.Errorf("failed to fetch all interfaces: %w", err)
} }
userPeers, err := m.db.GetUserPeers(context.Background(), userId)
if err != nil {
return fmt.Errorf("failed to retrieve existing peers prior to default peer creation: %w", err)
}
var newPeers []domain.Peer var newPeers []domain.Peer
for _, iface := range existingInterfaces { for _, iface := range existingInterfaces {
if iface.Type != domain.InterfaceTypeServer { if iface.Type != domain.InterfaceTypeServer {
continue // only create default peers for server interfaces continue // only create default peers for server interfaces
} }
peerAlreadyCreated := slices.ContainsFunc(userPeers, func(peer domain.Peer) bool {
return peer.InterfaceIdentifier == iface.Identifier
})
if peerAlreadyCreated {
continue // skip creation if a peer already exists for this interface
}
peer, err := m.PreparePeer(ctx, iface.Identifier) peer, err := m.PreparePeer(ctx, iface.Identifier)
if err != nil { if err != nil {
return fmt.Errorf("failed to create default peer for interface %s: %w", iface.Identifier, err) return fmt.Errorf("failed to create default peer for interface %s: %w", iface.Identifier, err)